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Sexing Octopus's

lance

Wonderpus
Registered
Joined
Jan 13, 2009
Messages
226
Is there a defining characteristic in Octopus's to sexing them? or do they vary according to species?

thanks,

Lance
:octorun:
 
Joined
Sep 8, 2006
Messages
2,390
Male octopuses usually carry their 3rd right arm curled, the tip is modified (not always obvious and does vary within species from descriptions I've seen), over-sized suckers on certain arms is the easiest way to tell in my opinion. My O. briareus for example has obviously larger suckers closer to the mouth, about 3 or 4 inches down there is a dramatic decrease in sucker size. Females seem to have a more uniform appearance to their suckers.
 

DWhatley

Kraken
Staff member
Moderator
Joined
Sep 4, 2006
Messages
21,020
On OhToo (hummelincki), I am seeing a very distinct difference in the third arm (not as obvious on Octane -also hummelincki - though). He does not keep still on the glass long enough for me to get a good look and I am going to concentrate on getting some pictures this week but the arm is shorter and fatter than the others and about an inch of the end has a tan colored row (possibly two rows) of some kind of "bumps". It is going to require a good photo to see the details and I still can't identify the spermataphore channel but this is the first octo I have had that the hectocotylus (modified arm) is very visible.
 

lance

Wonderpus
Registered
Joined
Jan 13, 2009
Messages
226
thanks guys

very interesting so mostly based on there arm's is the easiest way defining a male from a female once I acquire my first specimen of a Cephalopod I hope I can with you guy's help identify it as male or female.

Lance
:smile:
 

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